KR100786685B1 - Drum type washing machine - Google Patents

Drum type washing machine Download PDF

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Publication number
KR100786685B1
KR100786685B1 KR1020070002094A KR20070002094A KR100786685B1 KR 100786685 B1 KR100786685 B1 KR 100786685B1 KR 1020070002094 A KR1020070002094 A KR 1020070002094A KR 20070002094 A KR20070002094 A KR 20070002094A KR 100786685 B1 KR100786685 B1 KR 100786685B1
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KR
South Korea
Prior art keywords
bearing
washing machine
water tank
bearing housing
unit
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KR1020070002094A
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Korean (ko)
Inventor
성종훈
권태성
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삼성전자주식회사
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Priority to KR1020070002094A priority Critical patent/KR100786685B1/en
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/26—Casings; Tubs
    • D06F37/267—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups
    • D06F37/269—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups for the bearing of the rotary receptacle
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/02—Rotary receptacles, e.g. drums
    • D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • D06F37/206—Mounting of motor
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • D06F37/22—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a horizontal axis
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/26—Casings; Tubs
    • D06F37/264—Tubs provided with reinforcing structures, e.g. ribs, inserts, braces

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)

Abstract

A front-loading washing machine is provided to cut down a fabrication cost by supporting a part of a bearing by using a plurality of supporting ribs. A bearing housing(40) of a front-loading washing machine comprises a body unit(41) wherein a bearing(45) is embedded, a flange unit(43). The body unit has a border unit, and a plurality of supporting ribs. The flange unit is expanded from the body unit. The border unit is shaped as a hollowed cylinder. The plural supporting ribs are radially projected from an endostyle surface of the border unit, and support the bearing. The plural supporting ribs are extended to a shaft direction of the body unit respectively. The plural supporting ribs have a bearing placing unit at two ends. A part of the bearing placing unit is cut to allow the bearing to be mounted.

Description

드럼세탁기{Drum Type Washing Machine}Drum Washing Machine {Drum Type Washing Machine}

도 1은 본 발명의 일 실시예에 따른 드럼세탁기의 단면도.1 is a cross-sectional view of the drum washing machine according to an embodiment of the present invention.

도 2는 본 발명의 일 실시예에 따른 드럼세탁기의 베어링 하우징과 구동모터가 결합되는 수조의 뒷면을 분리하여 보인 사시도.Figure 2 is a perspective view showing the separation of the back of the tank coupled to the bearing housing and the driving motor of the drum washing machine according to an embodiment of the present invention.

도 3은 도 2에서 베어링 하우징의 확대도.3 is an enlarged view of the bearing housing in FIG. 2;

도 4는 도 2에서 베어링 하우징의 후면 확대도.4 is an enlarged rear view of the bearing housing in FIG. 2;

도 5는 베어링 하우징이 팽창하는 모습을 나타낸 정면도. 5 is a front view showing a state in which the bearing housing is expanded.

*도면의 주요부분에 대한 부호 설명** Description of symbols on the main parts of the drawings *

11: 수조 20: 회전축11: water tank 20: rotating shaft

30: 구동모터 40: 베어링 하우징30: drive motor 40: bearing housing

41: 몸체부 41a: 테두리부41: body portion 41a: frame portion

41b: 지지리브 42: 베어링 안착부41b: support rib 42: bearing seat

본 발명은 드럼세탁기에 관한 것으로, 더욱 상세하게는 드럼세탁기의 베어링 하우징의 구조를 변경함으로써 회전축을 지지하는 베어링이 베어링 하우징으로부터 이탈되는 것을 방지할 수 있는 드럼세탁기에 관한 것이다.The present invention relates to a drum washing machine, and more particularly, to a drum washing machine which can prevent the bearing supporting the rotating shaft from being separated from the bearing housing by changing the structure of the bearing housing of the drum washing machine.

일반적으로 드럼세탁기는 구동모터의 회전력을 이용하여 회전조를 회전시킴으로써 세탁물의 세탁이 이루어지도록 하고, 회전조를 고속으로 회전시킴으로써 세탁물의 탈수가 이루어지도록 한다.In general, the drum washing machine to wash the laundry by rotating the rotary bath using the rotational force of the drive motor, and the laundry is dewatered by rotating the rotary bath at high speed.

이와 같이 회전조를 회전시키기 위해 세탁수가 저수되는 수조의 외측에는 회전조를 정·역회전 시키기 위한 구동모터와, 회전조와 구동모터를 결합시키는 회전축을 구비한다.As described above, the outer side of the water tank in which the washing water is stored to rotate the rotating tub includes a driving motor for rotating the rotating tub forward and reverse, and a rotating shaft coupling the rotating tub and the driving motor.

회전축은 수조 뒷면의 중심부를 관통하도록 배치되어 그 일단부는 회전조와 결합되고 그 타단부는 구동모터에 결합된다. 수조의 뒷면 중심부에는 회전축이 회전할 수 있도록 회전축을 지지하는 베어링과, 베어링이 내주면에 밀착되어 안착되는 베어링 하우징이 마련된다.The rotating shaft is disposed to penetrate the center of the rear surface of the tank so that one end thereof is coupled to the rotating tank and the other end thereof is coupled to the driving motor. In the center of the rear of the tank is provided a bearing for supporting the rotating shaft so that the rotating shaft can rotate, and a bearing housing in which the bearing is seated in close contact with the inner circumferential surface.

주로 베어링 하우징은 알루미늄 다이캐스팅 합금으로 만들어지는데 반해, 베어링은 스테인리스 스틸로 만들어진다. 이와 같이 베어링과 베어링 하우징이 서로 다른 재질로 만들어지므로 선팽창 계수는 서로 차이가 나게 되는데 베어링 하우징의 선팽창계수가 베어링의 선팽창계수보다 크다.Mostly bearing housings are made of aluminum die casting alloys, while bearings are made of stainless steel. Since the bearing and the bearing housing are made of different materials as described above, the linear expansion coefficients are different from each other. The linear expansion coefficient of the bearing housing is larger than that of the bearing.

따라서, 삶음 세탁 또는 건조 등의 행정을 수행할 때 수조 내부의 온도가 높아지게 되면 베어링보다 베어링 하우징이 더 많이 팽창하게 되어 베어링이 베어링 하우징으로부터 이탈되는 문제점이 있었다.Therefore, when the temperature inside the water tank is increased when the washing or drying process is performed, there is a problem that the bearing housing expands more than the bearing and the bearing is separated from the bearing housing.

또한, 베어링 하우징이 베어링을 지지하기 위해서는 베어링 하우징의 두께가 두꺼워질 수 밖에 없어 베어링 하우징의 재료비가 많이 드는 문제점이 있었다.In addition, in order for the bearing housing to support the bearing, the thickness of the bearing housing is inevitably increased, resulting in a large material cost of the bearing housing.

본 발명은 상기와 같은 문제점을 해결하기 위한 것으로, 본 발명의 목적은 베어링 하우징에 안착되는 베어링이 베어링 하우징으로부터 이탈되는 것을 방지할 수 있는 드럼세탁기를 제공하는 것이다.The present invention is to solve the above problems, an object of the present invention is to provide a drum washing machine that can prevent the bearing seated on the bearing housing from being separated from the bearing housing.

본 발명의 또 다른 목적은 베어링 하우징의 제조비용을 절감할 수 있는 드럼세탁기를 제공하는 것이다.Another object of the present invention is to provide a drum washing machine that can reduce the manufacturing cost of the bearing housing.

상기와 같은 목적을 달성하기 위한 본 발명에 따른 드럼세탁기는 수조와, 상기 수조에 회전 가능하게 내장되는 회전조와, 상기 회전조에 결합되며 상기 수조의 외측으로 연장된 회전축과, 상기 회전축을 회전 가능하게 지지하는 베어링과, 상기 수조의 후면에 결합되며 상기 베어링이 안착되는 베어링 하우징을 구비하는 드럼세탁기에 있어서, 상기 베어링 하우징은 상기 베어링이 내장되는 몸체부와, 상기 몸체부로부터 확장 형성된 플랜지부를 구비하고, 상기 몸체부는 중공의 원통형상인 테두리부와, 상기 테두리부의 내주면으로부터 방사상으로 돌출되어 상기 베어링을 지지하는 복수개의 지지리브를 구비한다.Drum washing machine according to the present invention for achieving the above object is a water tank, a rotating tank rotatably embedded in the tank, a rotating shaft coupled to the rotating tank and extending to the outside of the tank, and the rotating shaft rotatably In a drum washing machine having a bearing for supporting and a bearing housing coupled to the rear surface of the tank and the bearing is seated, the bearing housing includes a body portion in which the bearing is embedded and a flange portion extending from the body portion. The body portion includes a hollow cylindrical edge portion and a plurality of support ribs projecting radially from the inner circumferential surface of the edge portion to support the bearing.

또한, 상기 복수개의 지지리브는 각각 상기 몸체부의 축방향으로 연장되며, 그 양측 단부에는 상기 베어링이 안착되도록 그 일부가 절개된 베어링 안착부가 형성된다.In addition, each of the plurality of support ribs extends in the axial direction of the body portion, and both ends of the support ribs are formed with bearing seats in which a portion thereof is cut.

또한, 상기 베어링 안착부는 상기 베어링을 축방향으로 지지하는 제1지지부와, 상기 베어링을 반경방향으로 지지하는 제2지지부를 구비한다.In addition, the bearing seating portion has a first support portion for supporting the bearing in the axial direction and a second support portion for supporting the bearing in the radial direction.

또한, 상기 복수개의 지지리브는 등간격으로 형성된다.In addition, the plurality of support ribs are formed at equal intervals.

이하에서는 첨부된 도면을 참조하여 본 발명의 바람직한 실시예에 따른 드럼세탁기에 대하여 상세하게 설명하고자 한다.Hereinafter, a drum washing machine according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 일 실시예에 따른 드럼세탁기의 종단면도이다. 도시된 바와 같이, 본 발명에 따른 드럼세탁기는 외관을 형성하는 하우징(10)과, 하우징(10)의 내부에 설치되며 세탁수가 저수되는 수조(11)와, 수조(11)의 내부에 회전 가능하게 설치되어 세탁물이 세탁되는 회전조(12)와, 하우징(10)의 전면에 설치되어 개방된 하우징(10)의 전면을 개폐하는 도어(13)를 구비한다.1 is a longitudinal cross-sectional view of a drum washing machine according to an embodiment of the present invention. As shown, the drum washing machine according to the present invention, the housing 10 to form an appearance, the water tank 11 is installed in the housing 10 and the wash water is stored, and can be rotated inside the water tank 11 It is provided with a rotating tub 12 is installed to wash the laundry, and the door 13 to open and close the front of the housing 10 is installed in the front of the housing 10 open.

하우징(10)의 내측 상부에는 수조(11)로 세탁수와 세제를 공급하는 급수관(14), 세제 공급장치(15)와 급수관(14)에 공급되는 세탁수를 제어하는 급수밸브(16)가 설치된다. 하우징(10)의 하부에는 수조(11)를 지지하는 서스펜션(17)과, 수조(11)에 담겨진 세탁수를 하우징(10)의 외부로 배출시키기 위한 배수관(18)과 배수펌프(19)가 설치된다.On the inner upper part of the housing 10, a water supply pipe 14 for supplying washing water and detergent to the water tank 11, and a water supply valve 16 for controlling the washing water supplied to the detergent supply device 15 and the water supply pipe 14 are provided. Is installed. In the lower part of the housing 10, a suspension 17 supporting the water tank 11, a drain pipe 18 and a drain pump 19 for discharging the wash water contained in the water tank 11 to the outside of the housing 10 are provided. Is installed.

수조(11)의 외측에는 회전조(12)를 정·역회전 시키기 위한 구동모터(30)가 설치되며, 회전조(12)와 구동모터(30) 사이에는 구동모터(30)의 회전력을 회전조(12)로 전달시키기 위한 회전축(20)이 설치된다. 회전축(20)은 수조(11) 뒷면(11a)의 중심부를 관통하여 그 일단부는 회전조(12)와 결합되고 그 타단부는 구 동모터(30)에 결합된다. The outer side of the water tank 11 is provided with a drive motor 30 for rotating the rotating tank 12 forward and reverse, and rotates the rotational force of the drive motor 30 between the rotating tank 12 and the drive motor 30. A rotating shaft 20 for delivering to the tank 12 is installed. The rotating shaft 20 penetrates through the center of the rear surface 11a of the water tank 11, one end of which is coupled to the rotating tank 12, and the other end of which is coupled to the driving motor 30.

수조(11)의 뒷면(11a) 중심부에는 회전축(20)이 잘 회전할 수 있도록 회전축(20)을 지지하는 한쌍의 베어링(45)과, 베어링(45)이 내주면에 밀착되게 안착되는 베어링 하우징(40)이 마련된다.At the center of the rear surface 11a of the water tank 11, a pair of bearings 45 supporting the rotating shaft 20 so that the rotating shaft 20 can rotate well, and a bearing housing in which the bearing 45 is closely adhered to the inner circumferential surface ( 40) is provided.

베어링 하우징(40)은 수조(11)의 뒷면(11a)에 직접적으로 결합되고 구동모터(30)는 베어링 하우징(40)을 통해 수조(11)의 뒷면(11a)에 결합된다.The bearing housing 40 is directly coupled to the rear face 11a of the water tank 11 and the drive motor 30 is coupled to the rear face 11a of the water tank 11 through the bearing housing 40.

도 2는 구동모터(30)와 베어링 하우징(40)이 결합되는 수조(11)의 뒷면(11a)을 분리해서 보인 사시도로서, 도 2를 참조하여 구동모터(30) 및 베어링 하우징(40)이 수조(11)에 결합되는 모습에 대하여 설명한다.FIG. 2 is a perspective view of the rear surface 11a of the water tank 11 to which the driving motor 30 and the bearing housing 40 are coupled. The driving motor 30 and the bearing housing 40 are illustrated in FIG. The state of being coupled to the water tank 11 is demonstrated.

도 2에 도시된 바와 같이, 구동모터(30)는 대략 환형상으로 형성되어 수조(11)의 뒷면(11a)에 결합되는 고정자(31)와, 회전축(20)에 결합되며 고정자(31)의 뒷면과 외주면을 둘러싸도록 배치되는 회전자(32)를 구비한다. 구동모터(30)는 고정자(31)와 회전자(32)의 전자기 작용에 의해 회전축(20)과 회전조(12)를 회전시키게 된다.As shown in FIG. 2, the driving motor 30 is formed in a substantially annular shape and is coupled to the stator 31 coupled to the rear side 11a of the water tank 11, and coupled to the rotation shaft 20 and of the stator 31. The rotor 32 is disposed to surround the rear surface and the outer circumferential surface. The drive motor 30 rotates the rotating shaft 20 and the rotating tub 12 by the electromagnetic action of the stator 31 and the rotor 32.

고정자(31)의 내주면에는 복수의 체결홀(33)이 마련된다. 이 체결홀(33)들은 후술할 베어링 하우징(40)에 마련된 복수의 관통홀(44)을 통해 수조(11)의 체결돌기(21)와 결합된다. 회전자(32)의 중앙부에는 관통홀(36)이 형성되어 있어 관통홀(36)을 통해 볼트(37)를 체결함으로써 회전축(20)과 결합된다.A plurality of fastening holes 33 are provided on the inner circumferential surface of the stator 31. The fastening holes 33 are coupled to the fastening protrusions 21 of the water tank 11 through a plurality of through holes 44 provided in the bearing housing 40 to be described later. The through hole 36 is formed in the center of the rotor 32 and is coupled to the rotating shaft 20 by fastening the bolt 37 through the through hole 36.

베어링 하우징(40)은 알루미늄 다이캐스팅 합금 또는 주철과 같은 금속성 재 질로 마련되며 수조(11)의 뒷면(11a)에 인서트 결합된다. 이것은 플라스틱으로 제조되는 수조(11)의 강성이 취약하기 때문에, 금속 재질의 베어링 하우징(40)으로 강성을 보강해 주기 위함이다. 이를 위해 베어링 하우징(40)은 수조(11)의 뒷면(11a)에 형합하도록 뒷면(11a)과 동일한 패턴 형상으로 가공된다.The bearing housing 40 is made of a metallic material such as aluminum die casting alloy or cast iron and is insert-coupled to the rear surface 11a of the water tank 11. This is because the rigidity of the water tank 11 made of plastic is weak, so as to reinforce the rigidity with the bearing housing 40 made of metal. To this end, the bearing housing 40 is processed into the same pattern shape as the rear surface 11a so as to conform to the rear surface 11a of the water tank 11.

도 3 및 도 4는 도 2에서 베어링 하우징(40)의 확대도로서 도 3 및 도 4를 참조하여 베어링 하우징(40)의 구조에 대해 설명한다.3 and 4 are enlarged views of the bearing housing 40 in FIG. 2, and the structure of the bearing housing 40 will be described with reference to FIGS. 3 and 4.

도 3 및 도 4에 도시된 바와 같이 베어링 하우징(40)은 베어링(45)이 내장되는 몸체부(41)와, 몸체부(41)로부터 확장 형성된 플랜지부(43)를 구비한다.As shown in FIGS. 3 and 4, the bearing housing 40 includes a body portion 41 in which the bearing 45 is embedded, and a flange portion 43 extending from the body portion 41.

베어링(45)이 내장되는 몸체부(41)는 중공의 원통형상인 테두리부(41a)와, 테두리부(41a)의 내주면으로부터 방사상으로 돌출된 복수개의 지지리브(41b)를 구비한다.The body portion 41 in which the bearings 45 are embedded has a hollow cylindrical portion 41a and a plurality of support ribs 41b protruding radially from the inner circumferential surface of the edge portion 41a.

복수개의 지지리브(41b)는 각각 몸체부(41)의 축방향으로 연장되며, 베어링(45)을 안정적으로 지지하기 위해 등간격으로 형성된다. 따라서, 복수개의 지지리브(41b)들 사이에는 빈 공간(47)이 형성되므로 베어링 하우징(40)에 사용되는 금속성 재료의 양을 줄일 수 있어 제조비용을 줄일 수 있다.The plurality of support ribs 41b extend in the axial direction of the body portion 41, respectively, and are formed at equal intervals to stably support the bearing 45. Therefore, since the empty space 47 is formed between the plurality of support ribs 41b, the amount of metallic material used in the bearing housing 40 can be reduced, thereby reducing the manufacturing cost.

한편, 복수개의 지지리브(41b)의 양측 단부에는 각각 베어링(45)이 안착되도록 그 일부가 절개되어 형성된 베어링 안착부(42)가 형성된다.On the other hand, at both ends of the plurality of support ribs 41b, bearing seating portions 42 formed by cutting a portion thereof are formed so that the bearings 45 are seated, respectively.

베어링 안착부(42)는 베어링(45)을 축방향으로 지지하는 제1지지부(42a)와, 반경방향으로 지지하는 제2지지부(42b)를 구비한다. The bearing seat 42 has a first support portion 42a for supporting the bearing 45 in the axial direction and a second support portion 42b for supporting the bearing 45 in the radial direction.

베어링(45)은 수분에 의해 녹슬지 않도록 스테인리스 스틸과 같은 금속성 재질로 마련되며 베어링(45)이 베어링 안착부(42)에 안착될 때에는 베어링(45)이 베어링 안착부(42)에 압입되도록 한다.The bearing 45 is made of a metallic material such as stainless steel so as not to be rusted by moisture, and when the bearing 45 is seated on the bearing seat 42, the bearing 45 is pressed into the bearing seat 42.

몸체부(41)로부터 확장 형성되는 플랜지부(43)에는 고정자(31)의 체결홀(33)에 대응하는 복수의 관통홀(44)이 마련되어 있다. 또한, 플랜지부(43)는 몸체부(41)로부터 일체로 반경방향으로 확장되어 후방으로부터 구동모터(30)가 체결되더라도 외부로 노출될 수 있도록 되어 있다. 즉, 몸체부(41)로부터 확장된 플랜지부(43)의 반경은 구동모터(30)의 회전자(32) 반경보다 적어도 커야 한다.The flange portion 43 extending from the body portion 41 is provided with a plurality of through holes 44 corresponding to the fastening holes 33 of the stator 31. In addition, the flange portion 43 is integrally extended in the radial direction from the body portion 41 so that it can be exposed to the outside even if the drive motor 30 is fastened from the rear. That is, the radius of the flange portion 43 extending from the body portion 41 should be at least greater than the radius of the rotor 32 of the drive motor 30.

이하에서는 도 5를 참조하여 상기와 같이 형성된 베어링 하우징(40)이 삶음 세탁 또는 건조 등의 행정이 수행될 때 선팽창하는 과정을 설명한다.Hereinafter, a process of linearly expanding the bearing housing 40 formed as described above with reference to FIG. 5 when a stroke such as washing or drying is performed.

상기와 같은 드럼세탁기에서 삶음 세탁 또는 건조 등의 행정이 수행되면 수조(11) 내부의 온도가 올라가게 되고, 이에 따라 베어링 하우징(40) 쪽으로 열이 전달되어 베어링 하우징(40) 및 베어링(45)은 선팽창하게 된다.In the drum washing machine as described above, if a stroke such as washing or drying is performed, the temperature inside the water tank 11 is increased. Accordingly, heat is transferred toward the bearing housing 40, thereby bearing the housing 40 and the bearing 45. Becomes linear expansion.

이때 몸체부(41)에서 원통형의 테두리부(41a)는 원주방향(A방향)으로 선팽창하는데 반해, 복수개의 지지리브(41b)는 반경방향(B방향)으로 선팽창하게 되므로 서로 대향하는 지지리브(41b) 사이의 간격이 늘어나는 것을 방지할 수 있다.At this time, the cylindrical portion 41a in the body portion 41 linearly expands in the circumferential direction (A direction), whereas the plurality of support ribs 41b are linearly expanded in the radial direction (B direction) so as to face each other. The distance between 41b) can be prevented from increasing.

따라서, 베어링 하우징(40)의 선팽창계수가 베어링(45)의 선팽창계수보다 더 크더라도 베어링(45)이 베어링 하우징(40)에서 이탈되는 것을 방지할 수 있게 된다. Therefore, even if the linear expansion coefficient of the bearing housing 40 is larger than the linear expansion coefficient of the bearing 45, the bearing 45 can be prevented from being separated from the bearing housing 40.

이상에서 상세히 설명한 바와 같이, 본 발명에 따른 드럼세탁기에 의하면 방사상으로 돌출된 복수개의 지지리브에 베어링이 안착되는 베어링 안착부가 형성됨으로써 베어링 하우징의 선팽창계수가 베어링의 선팽창계수보다 크더라도 베어링이 베어링에서 이탈되는 것을 방지할 수 있다.As described above in detail, according to the drum washing machine according to the present invention, a bearing seating portion in which a bearing is seated is formed in a plurality of radially protruding support ribs, so that the bearing is formed in the bearing even if the coefficient of linear expansion of the bearing housing is larger than that of the bearing. It is possible to prevent the departure.

또한, 베어링 하우징이 베어링의 외주면 전체와 접촉하여 베어링을 지지하는 것이 아니라, 복수개의 지지리브를 사용하여 일부를 지지하므로 베어링 하우징에 사용되는 금속재료의 양을 줄일 수 있어 제조비용을 줄일 수 있다.In addition, the bearing housing does not support the bearing in contact with the entire outer circumferential surface of the bearing, but supports a portion using a plurality of support ribs, thereby reducing the amount of metal material used in the bearing housing, thereby reducing manufacturing costs.

Claims (4)

수조와, 상기 수조에 회전 가능하게 내장되는 회전조와, 상기 회전조에 결합되며 상기 수조의 외측으로 연장된 회전축과, 상기 회전축을 회전 가능하게 지지하는 베어링과, 상기 수조의 후면에 결합되며 상기 베어링이 안착되는 베어링 하우징을 구비하는 드럼세탁기에 있어서,A water tank, a rotating tank rotatably embedded in the water tank, a rotating shaft coupled to the rotating tank and extending outwardly of the water tank, a bearing rotatably supporting the rotating shaft, coupled to a rear surface of the water tank, and the bearing In a drum washing machine having a bearing housing seated, 상기 베어링 하우징은 상기 베어링이 내장되는 몸체부와, 상기 몸체부로부터 확장 형성된 플랜지부를 구비하고, 상기 몸체부는 중공의 원통형상인 테두리부와, 상기 테두리부의 내주면으로부터 방사상으로 돌출되어 상기 베어링을 지지하는 복수개의 지지리브를 구비하는 것을 특징으로 하는 드럼세탁기.The bearing housing includes a body portion in which the bearing is embedded, and a flange portion extending from the body portion, wherein the body portion protrudes radially from an inner circumferential surface of the cylindrical portion and supports the bearing. A drum washing machine comprising a plurality of support ribs. 제 1항에 있어서,The method of claim 1, 상기 복수개의 지지리브는 각각 상기 몸체부의 축방향으로 연장되며, 그 양측 단부에는 상기 베어링이 안착되도록 그 일부가 절개된 베어링 안착부가 형성된 것을 특징으로 하는 드럼세탁기.Each of the plurality of support ribs extends in the axial direction of the body portion, and a drum seating machine having a bearing seat portion formed by cutting a portion thereof so that the bearing is seated at both ends thereof. 제 2항에 있어서,The method of claim 2, 상기 베어링 안착부는 상기 베어링을 축방향으로 지지하는 제1지지부와, 상기 베어링을 반경방향으로 지지하는 제2지지부를 구비하는 것을 특징으로 하는 드럼세탁기.And the bearing seating portion includes a first support portion for supporting the bearing in an axial direction and a second support portion for supporting the bearing in a radial direction. 제 1항에 있어서,The method of claim 1, 상기 복수개의 지지리브는 등간격으로 형성되는 것을 특징으로 하는 드럼세탁기.The plurality of support ribs are drum washing machine, characterized in that formed at equal intervals.
KR1020070002094A 2007-01-08 2007-01-08 Drum type washing machine KR100786685B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110331557A (en) * 2019-06-14 2019-10-15 青岛海尔滚筒洗衣机有限公司 A kind of washing machine outer cylinder bottom

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Publication number Priority date Publication date Assignee Title
JPS5517570U (en) 1978-07-21 1980-02-04
KR200222014Y1 (en) 2000-09-21 2001-05-02 대우전자주식회사 Clutch of washing machines
KR100505233B1 (en) 2002-12-10 2005-08-03 엘지전자 주식회사 drum washer
KR20060096714A (en) * 2005-03-02 2006-09-13 삼성전자주식회사 Drum type washing machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5517570U (en) 1978-07-21 1980-02-04
KR200222014Y1 (en) 2000-09-21 2001-05-02 대우전자주식회사 Clutch of washing machines
KR100505233B1 (en) 2002-12-10 2005-08-03 엘지전자 주식회사 drum washer
KR20060096714A (en) * 2005-03-02 2006-09-13 삼성전자주식회사 Drum type washing machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110331557A (en) * 2019-06-14 2019-10-15 青岛海尔滚筒洗衣机有限公司 A kind of washing machine outer cylinder bottom
CN110331557B (en) * 2019-06-14 2022-09-16 重庆海尔滚筒洗衣机有限公司 Outer cylinder bottom of washing machine

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